WhatsApp CEO Jan Koum announced today that the messaging app will add voice call support in Q2 of this year. The announcement was made at Mobile World Congress currently being held in Barcelona, Spain.

Koum said the new service will first be available on iOS and Android before landing on some BlackBerry and Nokia devices later in the year. The CEO also added that WhatsApps currently has 465 million monthly active users, and that 15 million of those users joined after Facebook bought the app for $19 billion last week.

On Friday Apple released iOS 7.0.6 which included a fix for a major security flaw. According to Apple, "An attacker with a privileged network position may capture or modify data in sessions protected by SSL/TLS." SSL (Secure Sockets Layer) is one of the main methods of encrypting internet traffic; without it hackers can see everything a person is doing online. This means cyber-thieves can potentially access emails, financial information and other private data. According to Cult of Mac, "Even banks are contacting their customers and advising them to update to iOS 7.0.6 immediately." Considering this vulnerability, it is highly recommended for iPhone and iPad users to update their firmware as soon as possible.

Jailbreakers, however, might not want to part with all of their tweaks and modifications and, as of Friday, there was no jailbreak with support for iOS 7.0.6

One of the more attention grabbing iPhone tweaks is a custom boot sound that plays every time the device is turned on, rebooted or after a respring. iOS 7 users with jailbroken devices can grab BootSound for free, and choose from a selection of OS boot sounds. A personalized sound file can also be played.

Once installed from Cydia, BootSound can be accessed under Settings -> BootSound. Default OS boot sounds included with the free tweak are MacOS, Ubuntu, Vista and WinXP. There's also a switch to disable the tweak entirely. Once the boot sound is selected tap the Respring button to enable the change. You will hear the sound when the lock screen appears after starting the iPhone.

Looking for a way to keep iOS app icons in their place on the home screen? The jailbreak tweak IconLock7 updates this tool for iOS 7, making it easy to prevent unauthorized app deletions or movement of app icons on the iPhone. These actions are verified with a password, supplied to IconLock7 before the tweak allows apps to start wiggling.

Once IconLock7 is installed from Cydia, simply hold down on a home screen app icon to enter a password. This will be required moving forward for any app layout adjustment or app deletion. The password can be changed later from Settings -> IconLock7 -> Change Password. Of course, to access the tweak's settings the current password must be entered first.

While new WebOS products are now limited to LG smart televisions, there are certainly some Palm fans who have migrated to iOS 7. Both of you can now enjoy a WebOS inspired slingshot effect on the iPhone app switcher. The jailbreak tweak Springshot takes one element of WebOS card multitasking and brings it to compatible Apple devices.

Typically, dismissing an app requires a swipe from bottom to top. The app card will fly off the top of the iPhone display, signaling that the app is closed. Once Springshot is installed, users have the option of pulling down on an app card. Much like WebOS, the app will then rebound and slingshot off the top of the screen.